From what I'm getting here. In your theory of "IP" you use the dantien in addition to localized muscle groups to create power. Kind of like the transmission in a car, you use weaker but centralized muscle of the core area of the body, specifically the iliopsoas, and the tensor fasciae latae (dantien) to help recruit more power and stability for localized muscle groups.

If I'm reading this right, there is also the theory that high level dantien guys can move their appendages with only the muscular contractions of the dantien. However, again if I'm reading this right, it's still most beneficial/powerful to recruit local muscular groups (muscles of the legs, arms etc) when attempting to do things as powerfully as possible. This would be kind of like chain linking the muscular groups together from the dantien out.